Intelligent hydraulic engineering safety monitoring sampling device and sampling method thereof

Abstract

The invention relates to the technical field of water conservancy sampling, in particular to an intelligent water conservancy project safety monitoring sampling device and a sampling method thereof.The intelligent water conservancy project safety monitoring sampling device comprises a sampler and a supporting sleeve fixed in the sampler, a movable rod axially slides in the supporting sleeve, and a sampling disc is rotatably mounted at the end of the movable rod; a water depth sensor is mounted at the bottom of the sampling disc and used for detecting the sampling depth of the sampling disc; the sealing ring is rotationally and hermetically mounted on the sampling disc, the side wall of the sealing ring is communicated with a conveying pipe, and the sampling disc is provided with a conducting assembly connected with the sealing ring; the delay sampling mechanism is arranged on the movable rod and connected with the sealing ring, the movable rod is further provided with a rotation adjusting mechanism connected with the delay sampling mechanism, and under the action of the delay sampling mechanism, the sampling disc can be controlled to rotate through the rotation adjusting mechanism so as to adjust the conduction state of the conduction assembly; therefore, the sampling pipeline is firstly pre-washed, and then sampling is carried out.

Description

Technical Field

[0001] This invention relates to the field of water conservancy safety sampling technology, specifically to an intelligent water conservancy project safety monitoring sampling device and its sampling method. Background Technology

[0002] Water conservancy projects are crucial infrastructure for developing and utilizing water resources, preventing floods, and ensuring water supply security. Water quality monitoring primarily aims to safeguard water security and indirectly supports the structural safety of water conservancy projects. For example, corrosion monitoring is essential because if water quality poses a risk of corrosion, it will inevitably have immeasurable negative impacts on water conservancy projects. By conducting targeted sampling and analysis of water layers at different depths, we can understand the changing patterns of corrosive pollutant distribution parameters in water bodies, providing a scientific basis for the prevention and control of corrosive water pollution.

[0003] In water quality monitoring of water conservancy projects, stratified sampling is a basic requirement. Because water bodies often exhibit temperature stratification, dissolved oxygen stratification, and differences in pollutant concentrations at different depths, collecting only surface water samples cannot reflect the true state of corrosive substances contained in the water body. Therefore, it is necessary to accurately sample water layers at specific depths.

[0004] Currently, the most widely used sampling method is the pump-suction sampling system. This system uses a water pump and a long-distance delivery pipeline to draw water samples from predetermined depths into a container at the water surface. However, when drawing water samples from different depths, water samples remaining on the inner wall of the pipeline from previous sampling will inevitably mix into the samples drawn later. For general water quality indicator testing, the impact of this residual contamination may be acceptable; however, for corrosive testing projects with extremely high safety requirements, even trace amounts of previous water samples remaining in the pipeline are enough to distort the test results. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent water conservancy project safety monitoring sampling device and sampling method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A smart water conservancy project safety monitoring and sampling device, comprising: A sampler and a support sleeve fixed inside the sampler, wherein a movable rod is axially slidable inside the support sleeve, and a sampling disk is rotatably mounted at the end of the movable rod, and a water depth sensor is installed at the bottom of the sampling disk for detecting the sampling depth of the sampling disk; Also includes: A sealing ring is rotatably and sealingly installed on the sampling plate. A delivery pipe is connected to the side wall of the sealing ring. A conductive component connected to the sealing ring is provided on the sampling plate. A delayed sampling mechanism is mounted on the movable rod and connected to the sealing ring. The movable rod is also equipped with a rotary adjustment mechanism connected to the delayed sampling mechanism. The rotary adjustment mechanism can drive the sampling disk to rotate intermittently when the delayed sampling mechanism moves, so as to adjust the conduction state between the conductive component and the delayed sampling mechanism.

[0007] As a further aspect of the present invention: the guiding component includes a guiding hole formed on the sealing ring, an air inlet formed on the top of the sampling disk that communicates with the guiding hole, a feed inlet formed on the side wall of the sampling disk that communicates with the conveying pipe, and a discharge hole formed at the bottom of the sampling disk. The air inlet, the feed inlet, and the discharge hole are each distributed in multiple circumferentially at equal intervals.

[0008] As a further embodiment of the present invention: the delayed sampling mechanism includes a fixed plate fixed on the movable rod, a piston cylinder fixed on the fixed plate, and a piston disc slidably and sealingly connected inside the piston cylinder; It also includes a pushing assembly and a suction assembly disposed on the fixed plate and connected to the piston disc.

[0009] As a further embodiment of the present invention: the pushing assembly includes a cylinder fixed on the fixed plate and inserted into the piston cylinder, a push rod that passes through the piston disc is fixed on the telescopic end of the cylinder, and an upper push ring and a lower push ring that abut against the piston disc are fixed on the push rod.

[0010] As a further embodiment of the present invention: the suction assembly includes a conduit and a pressure relief pipe fixed to the side wall of the piston cylinder, the conduit being fixedly connected to the sealing ring and communicating with the through hole.

[0011] As a further embodiment of the present invention: the rotary adjustment mechanism includes a support plate fixed on the movable rod, and symmetrically distributed guide columns are fixed on the support plate, with guide plates slidably mounted on the guide columns; It also includes a guide assembly and a driven assembly disposed on the guide plate and connected to the push rod.

[0012] As a further embodiment of the present invention: the guiding component includes an inclined groove and a vertical groove formed on the guide plate, a movable plate is fixed to the end of the push rod, and a limiting post is fixed on the movable plate that slides and engages with the inclined groove and the vertical groove.

[0013] As a further embodiment of the present invention: the driven component includes a rotating sleeve fixed on the sampling disk and sleeved on the movable rod, a ratchet is fixed on the rotating sleeve, and a ratchet plate that meshes with the ratchet is fixed on the guide plate.

[0014] As a further aspect of the present invention: the sampling disk has a plurality of circulating chambers and sampling chambers that are equidistantly distributed in a circle, and the circulating chambers and the sampling chambers are distributed alternately.

[0015] A smart water conservancy project safety monitoring sampling method includes the following steps: Step 1: Place the sampler in the sampling position and control the movable rod to extend out of the support sleeve so that the sampling plate extends into the water sample; Step 2: When the depth sensor detects that the sampling disk has reached the specified depth, the moving rod stops moving. At this time, the delayed sampling mechanism moves, driving the rotary adjustment mechanism to move, so that the sampling disk rotates by a specific angle. Step 3: The sampling plate will control the connection between the corresponding circulation chamber and sampling chamber and the delivery tube through the conductive component; Step 4: Under the action of the delayed sampling mechanism, the water sample is first drawn into the circulation chamber for pre-washing, and then the water sample is drawn into the sampling chamber for sampling.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention uses a cylinder to drive a push rod, which rotates the sampling disc to the pre-wash position, connecting the circulation chamber to the delivery pipe. Subsequently, the reciprocating motion of the piston disc generates negative pressure, drawing the water sample from the current depth into the circulation chamber, thoroughly flushing the delivery pipe and removing any remaining previous water sample. After pre-washing, the device rotates back to the sampling position, connecting the clean sampling chamber to the delivery pipe, and repeating the piston pump action to complete the formal sampling. In this way, the problem of cross-contamination between water samples from different depths caused by pipe residue is fundamentally eliminated, ensuring that the samples collected at each depth truly reflect the actual water quality of that water layer.

[0017] During each reciprocating motion of the push rod, the limiting post only interacts with the inclined groove in the initial stage of the movement, driving the guide plate to move laterally. This, in turn, causes the sampling disc to rotate at a fixed angle via the ratchet and ratchet mechanism, completing the chamber switching. During the subsequent piston pump suction and reset processes, the limiting post slides within the vertical groove, maintaining the sampling disc angle locked. When the guide plate resets, the unidirectional transmission characteristic of the ratchet and ratchet mechanism ensures that the sampling disc will not reverse. This ensures the orderly execution of the pre-washing and sampling processes, avoiding misoperation or repeated switching.

[0018] By monitoring the descent depth of the sampling tray in real time using a depth sensor and coordinating with the extension and retraction of the movable rod, the sampling tray can be precisely controlled to remain at any preset depth. After pre-washing and sampling are completed at one depth, the movable rod can extend further, moving the sampling tray to the next depth, repeating the above process. This "layer-by-layer descent and sampling" method allows for water sample collection at multiple depths in a single descent, significantly improving sampling efficiency while ensuring the independence and accuracy of sampling at each depth. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of one embodiment of a smart water conservancy project safety monitoring and sampling device.

[0020] Figure 2 This is a structural schematic diagram from another angle in one embodiment of a smart water conservancy project safety monitoring and sampling device.

[0021] Figure 3 This is a schematic diagram of the structure of the rotary adjustment mechanism, the partial delayed sampling mechanism, and the sealing ring in one embodiment of a smart water conservancy project safety monitoring sampling device.

[0022] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 5 This is a schematic diagram of the structure of a portion of the delayed sampling mechanism, sampling disk, and sealing ring in one embodiment of a smart water conservancy project safety monitoring sampling device.

[0024] Figure 6 This is a schematic cross-sectional view of the sampling disk and sealing ring in one embodiment of a smart water conservancy project safety monitoring sampling device.

[0025] Figure 7 This is a schematic diagram of the structure of a portion of the delayed sampling mechanism, the rotation adjustment mechanism, and the sampling disk in one embodiment of a smart water conservancy project safety monitoring sampling device.

[0026] Figure 8 This is a schematic diagram of the structure of a portion of the delayed sampling mechanism and the rotation adjustment mechanism in one embodiment of a smart water conservancy project safety monitoring sampling device.

[0027] Figure 9 This is an exploded structural diagram of a portion of the delayed sampling mechanism in one embodiment of a smart water conservancy project safety monitoring sampling device.

[0028] Figure 10 This is an exploded structural diagram of part of the conducting components and part of the rotating adjustment mechanism in one embodiment of a smart water conservancy project safety monitoring and sampling device.

[0029] In the diagram: 1. Sampler; 2. Support sleeve; 3. Movable rod; 4. Sampling plate; 401. Air inlet; 402. Feed inlet; 403. Discharge outlet; 404. Slide groove; 5. Sealing ring; 501. Through hole; 6. Conveying pipe; 7. Fixed plate; 8. Cylinder; 9. Piston cylinder; 10. Piston disc; 11. Push rod; 1101. Upper push ring; 1102. Lower push ring; 12. Movable plate; 1201. Limiting post; 13. Rotating sleeve; 14. Ratchet; 15. Support plate; 16. Connecting plate; 17. Guide post; 18. Guide plate; 1801. Inclined groove; 1802. Vertical groove; 19. Ratchet plate; 20. Conduit; 21. Pressure relief pipe. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0032] Please see Figures 1-10 In this embodiment of the invention, a smart water conservancy project safety monitoring and sampling device includes: The sampler 1 and the support sleeve 2 fixed inside the sampler 1, the support sleeve 2 has an axially sliding movable rod 3 inside, the end of the movable rod 3 is rotatably mounted with a sampling disk 4, and a water depth sensor is installed at the bottom of the sampling disk 4 to detect the sampling depth of the sampling disk 4. Also includes: A sealing ring 5 is rotatably and sealingly installed on the sampling disk 4. A conveying pipe 6 is connected to the side wall of the sealing ring 5. A conductive component connected to the sealing ring 5 is provided on the sampling disk 4. A delayed sampling mechanism is mounted on the movable rod 3 and connected to the sealing ring 5. The movable rod 3 is also equipped with a rotary adjustment mechanism connected to the delayed sampling mechanism. The rotary adjustment mechanism can drive the sampling disk 4 to rotate intermittently when the delayed sampling mechanism moves, so as to adjust the conduction state between the conducting component and the delayed sampling mechanism.

[0033] Specifically, the movable rod 3 can be driven by a hydraulic cylinder or by air propulsion; this application does not limit the method. When sampling water in water conservancy projects, it is usually necessary to sample at different depths depending on the water depth, flow, and environment. Therefore, during sampling, the sampler 1 can be placed in the sampling position. Then, the movable rod 3 is controlled to extend out of the support sleeve 2, thereby driving the sampling disc 4 into the water. When the water depth sensor detects that the sampling disc 4 has reached the sampling depth, the movable rod 3 stops moving. At this time, the sampling mechanism is delayed, and the sampling disc 4 is rotated to the pre-wash position via the rotation adjustment mechanism. The sampling disc 4 will then be adjusted through the conductive component. When the sampling is in the conducting state of 4, after adjustment, the delayed sampling mechanism will adjust the air pressure inside the sampling plate 4 through the sealing ring 5, and absorb and circulate the water sample through the delivery pipe 6, thereby flushing the delivery pipe 6 to prevent contamination from water samples at other depths remaining in the delivery pipe 6, which could lead to deviations in the required sample. After flushing, the above steps are repeated, causing the sampling plate 4 to rotate to the sampling position, and the sample at that depth is sampled through the delivery pipe 6. After sampling, the sampling plate 4 can be controlled to move down to the next sampling depth. In this way, by pre-washing the sampling pipeline before sampling, the accuracy of the required sample test results is ensured.

[0034] Please see Figure 6 The sampling disk 4 contains a plurality of circulating chambers and sampling chambers that are equidistantly distributed in a circular pattern, and the circulating chambers and the sampling chambers are distributed alternately.

[0035] Please see Figure 10 The conductive assembly includes a through hole 501 formed on the sealing ring 5, an air inlet 401 formed on the top of the sampling disk 4 that is in communication with the through hole 501, a feed inlet 402 formed on the side wall of the sampling disk 4 that is in communication with the conveying pipe 6, and a discharge hole 403 formed at the bottom of the sampling disk 4. The air inlet 401, the feed inlet 402, and the discharge hole 403 are each distributed in multiple circumferentially at equal intervals.

[0036] In detail, a negative pressure valve is installed inside the delivery pipe 6. When the delivery pipe 6 is connected to the corresponding circulation chamber or sampling chamber, the delivery pipe 6 will only be open when the negative pressure in the circulation chamber and sampling chamber reaches the set value. The air inlet 401 is opened on each circulation chamber and sampling chamber respectively. The discharge port 403 is only opened on the circulation chamber. A one-way valve is installed on the discharge port 403 so that the liquid in the circulation chamber can only be discharged through the discharge port 403, and the external water sample cannot enter the circulation chamber through the discharge port 403. The guide hole 501 and the air inlet 401 are located on the top of the sampling plate 4. Since the above valves are all applications of existing technology, this application will not elaborate on them.

[0037] Please see Figures 1-4 , Figures 6-9The delayed sampling mechanism includes a fixed plate 7 fixed on the movable rod 3, a piston cylinder 9 fixed on the fixed plate 7, and a piston disc 10 slidably and sealingly connected inside the piston cylinder 9; it also includes a pushing assembly and a suction assembly disposed on the fixed plate 7 and connected to the piston disc 10. The pushing assembly includes a cylinder 8 fixed on the fixed plate 7 and inserted into the piston cylinder 9. A push rod 11 penetrating the piston disc 10 is fixed on the telescopic end of the cylinder 8. An upper push ring 1101 and a lower push ring 1102 that abut against the piston disc 10 are fixed on the push rod 11. The suction assembly includes a conduit 20 and a pressure relief pipe 21 fixed on the side wall of the piston cylinder 9. The conduit 20 is fixedly connected to the sealing ring 5 and communicates with the through hole 501.

[0038] Please see Figures 1-8 , Figure 10 The rotary adjustment mechanism includes a support plate 15 fixed on the movable rod 3, a symmetrically distributed guide post 17 fixed on the support plate 15, and a guide plate 18 slidably mounted on the guide post 17; it also includes a guide assembly and a driven assembly disposed on the guide plate 18 and connected to the push rod 11. The guide assembly includes an inclined groove 1801 and a vertical groove 1802 formed on the guide plate 18. A movable plate 12 is fixed to the end of the push rod 11. A limiting post 1201 is fixed on the movable plate 12 and slidably engaged with the inclined groove 1801 and the vertical groove 1802. The driven assembly includes a rotating sleeve 13 fixed on the sampling disk 4 and sleeved on the movable rod 3. A ratchet 14 is fixed on the rotating sleeve 13. A ratchet plate 19 that meshes with the ratchet 14 is fixed on the guide plate 18.

[0039] Please see Figure 6 Furthermore, a groove 404 is formed at the bottom of the sampling plate 4, and the sealing ring 5 can slide in the groove 404. A connecting plate 16 fixedly connected to the sealing ring 5 is fixed on the support plate 15. Under the action of the connecting plate 16, the angle of the sealing ring 5 is ensured not to change. A one-way valve is installed in the pressure relief pipe 21. Under the action of the one-way valve, the gas can only be discharged through the pressure relief pipe 21, and the external water cannot enter the piston cylinder 9 through the pressure relief pipe 21. Moreover, the conduction pressure required by the one-way valve is greater than the conduction pressure required by the one-way valve installed at the discharge hole 403. In the initial state, the delivery pipe 6 is connected to one of the feed holes 402 located in the sampling chamber. Since the sampling chamber is not under negative pressure, the delivery pipe 6 is in a blocked state under the action of the negative pressure valve. At this time, the conduit 20 and the through hole 501 are also connected to the sampling chamber. In this state, the telescopic end of cylinder 8 is in the maximum extended state, and the upper push ring 1101 is controlled to abut against piston disc 10 by push rod 11 so that the effective pumping chamber volume of piston disc 10 is minimized, while the lower push ring 1102 is separated from piston disc 10. Push rod 11 also controls the distance between limit post 1201 and sealing ring 5 to be minimized by movable plate 12. At this time, limit post 1201 is located at the end of the stroke of inclined groove 1801 away from vertical groove 1802. Under the action of limit post 1201 and inclined groove 1801, guide plate 18 is located at the end of the stroke away from movable rod 3. When water sampling is required, the movable rod 3 extends out of the support sleeve 2, driving the sampling disk 4 to gradually penetrate deeper into the water. When the water depth sensor detects that the sampling disk 4 has reached the preset sampling depth, the movable rod 3 stops moving, and the sampling disk 4 remains stably at that depth. Subsequently, cylinder 8 operates, controlling push rod 11 to move towards the direction of fixed plate 7. The movement of push rod 11 drives upper push ring 1101, lower push ring 1102 and movable plate 12 to move synchronously. In the initial stage of movement, upper push ring 1101 first separates from piston disc 10, releasing the limit on piston disc 10, while lower push ring 1102 has not yet contacted piston disc 10, so piston disc 10 remains stationary. At the same time, the movement of movable plate 12 drives the limiting post 1201 fixed on it to slide along the inclined groove 1801 on guide plate 18. Since the inclined groove 1801 is inclined, the sliding of limiting post 1201 converts the linear movement of movable plate 12 into the lateral movement of guide plate 18 along the axis of guide post 17, driving guide plate 18 to slide towards the direction of movable rod 3. The movement of the guide plate 18 drives the ratchet plate 19 fixed on it to move synchronously. The ratchet plate 19 engages unidirectionally with the ratchet wheel 14 fixed on the rotating sleeve 13. During the lateral movement of the guide plate 18, the ratchet plate 19 drives the ratchet wheel 14 to rotate at a certain angle. The rotation of the ratchet wheel 14 drives the rotating sleeve 13 and the sampling disk 4 fixed thereto to rotate synchronously. The rotation of the sampling disk 4 changes the position of the air inlet 401 and the feed inlet 402 on it. The initial feed inlet 402 (located in the sampling chamber) that was originally connected to the delivery pipe 6 gradually shifts away from the delivery pipe 6, while the feed inlet 402 on the adjacent circulation chamber gradually aligns and connects with the delivery pipe 6. At the same time, the air inlet 401 corresponding to the circulation chamber is also connected to the guide tube 20 through the through hole 501. When the limiting post 1201 moves to the position where the inclined groove 1801 and the vertical groove 1802 are connected, the sampling plate 4 rotates to the pre-wash position, and the circulation chamber is connected with the delivery pipe 6 and the conduit 20. At this time, the guide plate 18 stops moving laterally, and the limiting post 1201 begins to enter the vertical groove 1802 to lock the position of the guide plate 18, ensuring that the angle of the sampling plate 4 remains unchanged in subsequent actions. At the same time, the push ring 1102 moves to the position where it abuts against the piston plate 10. As cylinder 8 continues to move, push rod 11 pushes piston disc 10 upward along piston cylinder 9 via lower push ring 1102. The upward movement of piston disc 10 causes the effective pumping chamber volume above piston disc 10 in piston cylinder 9 to gradually increase, and the air pressure in the chamber decreases, forming a negative pressure. This negative pressure is transmitted to the circulation chamber connected to delivery pipe 6 through conduit 20, through hole 501 and air inlet 401. When the negative pressure in the circulation chamber reaches the set threshold, the negative pressure valve in delivery pipe 6 opens, and the water sample at this depth is sucked into the circulation chamber through delivery pipe 6. When the water flows through delivery pipe 6, it flushes the pipe wall, washing away water samples from other depths that may remain in the pipe, eliminating the risk of cross-contamination. When cylinder 8 controls push rod 11 to move to the end of its stroke near fixed plate 7, cylinder 8 stops moving. A certain amount of water sample has been filled into the circulation chamber, but it is not yet full. Subsequently, cylinder 8 reverses its movement, controlling push rod 11 to begin resetting. In the initial resetting phase, lower push ring 1102 first separates from piston disc 10, which remains stationary. As push rod 11 continues resetting until upper push ring 1101 contacts piston disc 10, upper push ring 1101 pushes piston disc 10 downwards, compressing the pump chamber above piston cylinder 9. Because the pressure of the check valve in pressure relief pipe 21 is greater than the pressure of the check valve at discharge port 403, the compressed gas preferentially enters the circulation chamber through inlet port 401, through-hole 501, and conduit 20, increasing the pressure within the circulation chamber under positive pressure. In the lower part, the water sample in the circulation chamber is discharged through the discharge hole 403 at the bottom and flows back into the water body. During this process, the limiting post 1201 first slides upward along the vertical groove 1802 to keep the guide plate 18 locked. When the limiting post 1201 disengages from the vertical groove 1802 and re-enters the inclined groove 1801, the inclined profile of the inclined groove 1801 drives the guide plate 18 to move laterally in the opposite direction to reset. Since the ratchet 14 and the ratchet plate 19 are designed for unidirectional transmission, the guide plate 18 will not drive the sampling disk 4 to rotate in the opposite direction when it resets, ensuring that the sampling disk 4 rotates only once in the initial stage during the entire reciprocating stroke of the piston disk 10, thus completing the docking of the pre-wash position. In summary, the device completes a pre-washing cycle before formal sampling to flush the delivery pipe 6, effectively preventing sample contamination caused by water sample residue at other depths. After the push rod 11 is fully reset, the cylinder 8 starts again, controlling the push rod 11 to perform a second reciprocating motion. In the initial stage of the second motion, the limiting post 1201 cooperates with the inclined groove 1801 again, driving the guide plate 18 to move laterally, and driving the sampling disk 4 to rotate again through the ratchet 14 and ratchet plate 19, so that the feed hole 402 on the next adjacent sampling chamber is connected to the delivery pipe 6, and the air inlet 401 is connected to the through hole 501. Subsequently, the above piston pumping action is repeated, so that the cleaned pipeline after flushing draws the water sample into the sampling chamber, completing the formal sampling at this depth. After sampling is completed, the piston disk 10 is reset, and the gas is discharged through the pressure relief pipe 21 under positive pressure until the push rod 11 is fully reset.

[0040] At this point, the movable rod 3 can continue to extend, driving the sampling plate 4 to move down to the next preset sampling depth. In this way, through this working mode of pre-washing and then sampling, the device can effectively eliminate cross-contamination between water samples at different depths, ensuring that the samples collected at each depth truly reflect the actual water quality of that water layer.

[0041] A smart water conservancy project safety monitoring sampling method includes the following steps: Step 1: Place the sampler 1 in the sampling position and control the movable rod 3 to extend out of the support sleeve 2 so that the sampling plate 4 extends into the water sample; Step 2: When the depth sensor detects that the sampling disk 4 has reached the specified depth, the movable rod 3 stops moving. At this time, the delayed sampling mechanism moves, driving the rotary adjustment mechanism to move, so that the sampling disk 4 rotates at a specific angle. Step 3: The sampling plate 4 will control the corresponding circulation chamber and sampling chamber to be connected to the delivery pipe 6 through the conductive component; Step 4: Under the action of the delayed sampling mechanism, the water sample is first drawn into the circulation chamber for pre-washing, and then the water sample is drawn into the sampling chamber for sampling.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart water conservancy project safety monitoring and sampling device, comprising: A sampler and a support sleeve fixed inside the sampler, wherein a movable rod is axially slidable inside the support sleeve, and a sampling disk is rotatably mounted at the end of the movable rod, and a water depth sensor is installed at the bottom of the sampling disk for detecting the sampling depth of the sampling disk; Its characteristic is that it further includes: A sealing ring is rotatably and sealingly installed on the sampling plate. A delivery pipe is connected to the side wall of the sealing ring. A conductive component connected to the sealing ring is provided on the sampling plate. A delayed sampling mechanism is mounted on the movable rod and connected to the sealing ring. The movable rod is also equipped with a rotary adjustment mechanism connected to the delayed sampling mechanism. The rotary adjustment mechanism can drive the sampling disk to rotate intermittently when the delayed sampling mechanism moves, so as to adjust the conduction state between the conductive component and the delayed sampling mechanism.

2. The intelligent water conservancy project safety monitoring and sampling device according to claim 1, characterized in that, The guiding component includes a guiding hole formed on the sealing ring, an air inlet formed on the top of the sampling disk that communicates with the guiding hole, a feed inlet formed on the side wall of the sampling disk that communicates with the conveying pipe, and a discharge hole formed at the bottom of the sampling disk. The air inlet, the feed inlet, and the discharge hole are each distributed in multiple circumferentially.

3. The intelligent water conservancy project safety monitoring and sampling device according to claim 1, characterized in that, The delayed sampling mechanism includes a fixed plate fixed to the movable rod, a piston cylinder fixed on the fixed plate, and a piston disc slidably and sealingly connected inside the piston cylinder; It also includes a pushing assembly and a suction assembly disposed on the fixed plate and connected to the piston disc.

4. The intelligent water conservancy project safety monitoring and sampling device according to claim 3, characterized in that, The pushing assembly includes a cylinder fixed to the fixed plate and inserted into the piston cylinder. A push rod is fixed to the telescopic end of the cylinder, passing through the piston disc. An upper push ring and a lower push ring that abut against the piston disc are fixed on the push rod.

5. The intelligent water conservancy project safety monitoring and sampling device according to claim 4, characterized in that, The suction assembly includes a conduit and a pressure relief pipe fixed to the side wall of the piston cylinder. The conduit is fixedly connected to the sealing ring and communicates with the through hole.

6. The intelligent water conservancy project safety monitoring and sampling device according to claim 4, characterized in that, The rotary adjustment mechanism includes a support plate fixed on the movable rod, and symmetrically distributed guide columns are fixed on the support plate, with guide plates slidably mounted on the guide columns; It also includes a guide assembly and a driven assembly disposed on the guide plate and connected to the push rod.

7. The intelligent water conservancy project safety monitoring and sampling device according to claim 6, characterized in that, The guiding assembly includes an inclined groove and a vertical groove formed on the guide plate, and a movable plate is fixed to the end of the push rod. A limiting post is fixed on the movable plate and slides into the inclined groove and the vertical groove.

8. The intelligent water conservancy project safety monitoring and sampling device according to claim 7, characterized in that, The driven component includes a rotating sleeve fixed on the sampling disk and sleeved on the movable rod, a ratchet fixed on the rotating sleeve, and a ratchet plate that meshes with the ratchet fixed on the guide plate.

9. The intelligent water conservancy project safety monitoring and sampling device according to claim 1, characterized in that, The sampling disk contains multiple circumferentially distributed circulation chambers and sampling chambers, which are arranged alternately.

10. A smart water conservancy project safety monitoring sampling method, employing the smart water conservancy project safety monitoring sampling device as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Place the sampler in the sampling position and control the movable rod to extend out of the support sleeve so that the sampling plate extends into the water sample; Step 2: When the depth sensor detects that the sampling disk has reached the specified depth, the moving rod stops moving. At this time, the delayed sampling mechanism moves, driving the rotary adjustment mechanism to move, so that the sampling disk rotates by a specific angle. Step 3: The sampling plate will control the connection between the corresponding circulation chamber and sampling chamber and the delivery tube through the conductive component; Step 4: Under the action of the delayed sampling mechanism, the water sample is first drawn into the circulation chamber for pre-washing, and then the water sample is drawn into the sampling chamber for sampling.

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